Guides

How-to guides and instructions

PHPstorm Group ID (GID) file saving defaults

7 / 2025

PHPstorm sets the user ID and group ID according to your defaults. This can cause problems with shared file situations

phpstorm VirtualBox file permissions group id gid

WiFi not available - SOLVED

5 / 2025

How to resolve the dreaded "WiFi not available" message in Linux.

wifi not available network interface

Virtualbox development environment setup

5 / 2025

Set up networking and file-sharing between host and guest in Virtualbox

NFS share directory VirtualBox guest host local development

User management

5 / 2025

Basic Linux / Ubuntu commands to find and change user id and group id for users.

Flatpak application file permissions

4 / 2025

Flatpak application such as PrusaSlicer does not access interesting files such as symbolic links (symlinks) or hard links.

flatpak flatseal file permissions permission file system visibility prusaslicer

Linux: Thumbnailers and MIME Types (thumbnail / mimetype) - creating thumbnail images for file manager

4 / 2025

Concepts behind MIMEType processing and thumbnails

thumbnail thumbnailer thumbnailers file manager mime mime type mimetype mime types mimetypes freedesktop gnome

Linux: Boot from GRUB shell

12 / 2024

Initiate the boot sequence from the GRUB shell if the GRUB menu doesn't work.

Linux: Freeze kernel upgrade

12 / 2024

There are numerous ways to direct Ubuntu Linux to not upgrade the kernel.

kernel hold dont upgrade prevent kernel upgrade Ubuntu linux mint package manager

Ubuntu Linux GraphicsMagick: gm convert: Unable to read font (/usr/share/fonts/type1/gsfonts/n019003l.pfb).

12 / 2024

GraphicsMagick can not read or use fonts from /usr/share/fonts/type1/gsfonts directory.

ghostscript graphicsmagick missing font

Solved: Add Hibernate option to Linux

11 / 2024

Linux and particularly Linux Mint does not have a hibernate option as standard. Here is how to enable it.

linux mint hibernate

Solved Error: Slow boot in Linux

11 / 2024

Linux generally boots extremely fast. If you find yourself waiting two minutes or so for your Linux box to boot, you probably have a disk error.

linux boot disk errors slow boot fstab /etc/fstab long wait start job running

Solved Error: Linux bluetooth adapter present but failed to start

11 / 2024

Some boxes like Geekom IT12 with modern Linux like Mint 22 (wilma) or Ubuntu 24 (noble) based on Linux kernel 6.8 fail to start the Bluetooth adapter. This is how to resolve this initialization error.

linux kernel bluetooth present Geekom Mini PC error driver bluetooth 4.1

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